“Shark Tank” and “20/20,” carried ABC to an easy victory among young adults on Friday, but the night also featured ratings gains for scripted series on CBS and NBC.

ABC logged its highest adults 18-49 average on a Friday (1.8 rating/6 share) since November 2012, led by “Shark Tank” (2.2/8 in 18-49, 8.1 million viewers overall), which was up by more than 20% in the demo week to week to match its season high. It was aided by a special “Shark Tank” opening the night (1.5/6 in 18-49, 5.8 million viewers overall), which gave viewers updates on entrepreneurs who had previously appeared on the show; its opening half-hour matched last week’s season finale of “Last Man Standing” (1.4/6), but for its entire hour, this was the strongest showing to kick off the night this season for ABC.

For CBS, which won Friday in total viewers, “Blue Bloods” (1.5/5 in 18-49, 11.4 million viewers overall) was up week to week in 18-49, placing second in the demo for the 10 p.m. hour but moving up to first in adults 25-54 (2.3/7, tied with ABC); it again ruled as the night’s most-watched program overall. Also up for CBS was “Unforgettable” kicking off the night (1.1/4 in 18-49, 7.6 million viewers overall), but “Hawaii Five-o” was on the low side at 9 (1.4/5 in 18-49, 5.2 million viewers overall).

At NBC, “Dateline” (1.2/5 in 18-49, 6.4 million viewers overall) was up a bit from last week, and “Grimm” (second-place 1.4/5 in 18-49, 5.2 million viewers overall) followed with a four-week high in 18-49 and a six-week high in total viewers. And at 10 p.m., “Hannibal” (1.1/4 in 18-49, 2.8 million viewers overall) improved its renewal chances by delivering its highest 18-49 rating since its Feb. 28 season premiere.

Fox had a quiet night with back-to-back hours of “Kitchen Nightmares” (0.9/3 in 18-49, 2.4 million viewers overall at 8 and 0.8/3 in 18-49, 2.6 million viewers overall at 9), which was overwhelmed by reality rival “Shark Tank.”

CW started OK with “Whose Line Is It Anyway” (0.4/2 in 18-49, 1.2 million viewers overall), but “Hart of Dixie” was soft at 9 (0.2/1 in 18-49, 0.7 million viewers overall).